An enhanced target function is built up via Lagrange multiplier and the principle of equal mini rate of consumption increasement and the method of static boiler model analysis are put forward.

借助拉格朗日乘数法建立增广的目标函数，提出等耗量微增率准则及静态锅炉模型辨识方法，对耗量函数的性质给出了凸性要求。

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If you go for a variable rate mini-cash Isa you should bear in mind that some product providers have been know to offer a very attractive rate to tempt new customers but then reduce the return at a later date.

BBC: NEWS | Business | Ask the expert: Switching Isas

One way to get round this possible problem is to go for a fixed rate mini-cash Isa.

BBC: NEWS | Business | Ask the expert: Switching Isas

To deal with the high rate of return on hiking boots, REI created a mini hiking path with a variety of trail surfaces and angles for testing boots.

FORBES: Backpackers meet bottom line